Flush-valve mechanism



May 12, -1925.

N. GYMNAl'rls FLsH VALVE MECHANISM Filed March 1, 1922 lfavezaqrf: Jiffy/vanaf@ A m W5 a .2 7o 3f m/@ W 4 /Mf Patented May l2, i225.

U N lT-D ST 1537,44@ PATENT osi-Fic e.

NICOLAS exi/infirme, or SANTA BARBARA, CALIFORNIA.

amsn-verve' Mscnnnlsn.

Application area namh- 1,- i922', serial No, 540,311-,

10 @ZZ whom t muy concern:

Be it known th-at I, NICOLAS GYMNAITIS, a subject of the King of Greece, residing at Santa Barbara, in the county of Santa Barbara and State of California, have invented new and useful Improvements in'l Flush- Valve Mechanism, of which the following is a specification.

My invention relates to flush valve mechanism' for toilets, and a purpose of `my invention is the provision of a flu-sh valve mechanism of extremely simple and di'nable construction which eliminates the necessity of employing a flush tank, and which when actuated operates to automatically discharge a predetermined quantity of watery into the bowl.

Although Iv will describe only one form of flush valve mechanism embodying my invention and point out the novel features thereof in claims, it is' to be understood that various changes and modificati-ons may be made herein without departing from the spirit and scope of such claims.

In the accompanying drawings',

Fig. 1 is an enlarged 'verticalI sectional view of thevalve mechanism shown in. the precedingv figures. s

Fig. 2 is an enlarged fragmentary sectional view of the valve cap comprised in the mechanism shown in Fig. 1.

Fig. 3 is a view showing the valve ca'p in side elevation.

Figs. 4 and 5 are transverse sectional views taken on the lines 4 4 and 5--5, re'- spectively, of Fig. 1.

Similar reference characters refer to sim-ilar parts .in each off-the several views.

Referring specifically to the drawings my invention, in its present embodiment, com'- prises a tubular casing K threadedly engaging a casting C at a point indicated at 15. 'lhe casting C includes a depending extension lo which provides a water receiving chamber having one end closed by a screw plug 17, While the other end is provided with a collar 18 which is threadedly engaged by a water supply pipe P. The main body of the casting C is formed with a conical port 19 which communicates with the chamber at its lower end and with a duct 20 at its upper end. The duct 2O communicates with a pipe extension 21 to which a pipe 22 is adapted to be connected for supplying water to the bowl. lThe port 19 is controlled by a valve V preferably formed of rubber and of conical formation.- This valve V is sustained upon a stem 23 slidably fitted in a suitablev opening formed inthe cast-ingv C and in `an extension 24- provided o'n the" upper end of the casting and extending into the casing As clearly shown in 1, the stem 23 is extended` above the extension with its 'upper end providedwitha plunger or piston 25 grooved to receive a `packing ring 26 and adapted to sl-idably t within casing K. Formed integral with or secured to the piston 25 is a sleeve 27 which as clearly shown in Fig. 4, is of cylindrical' form and is provided at regular intervals on its periphery with longitudinally extencling'ribs 28y adapted to contact with the inner wall of the casing K. This sleeve 27 is designed for the purpose of housing a" coiled expansib'le spring 29 interposed betvveen'the piston 25' and the upper end of the extension 24 so as to normally urge the piston upwardly and to thereby close the valve V. stuffing box 30 embraces the stein 23 at the upper end of the extension 24 for preventing the leakage of water upwardly around the stem.

For actuating the piston 25' and consequently the valve V, a rod 31 is ii'xed to the sleeve 27 so as to extend through a slot 32 formed in the casing K, such rod being provided with a handle 33 b'y means ofV which the sleeve may be. moved downwardly against the tension of the spring 29 for moving the valve V to open position.

Removably associated with the upper end of the casing. K is a closurey platev 34v provided axially with anl opening 35.' Surrounding th'e opening and formed on the upper side of the plate 34is a valve cap 36 which, as clearly shown in Fig. 2, is formed with an air inta-ke port 37` and air exhaust ports 38. .4 ball cire-k valve 35) controls the inlal'ie porti?? and is removably associated therewith by means of a plug 40; A valve. 41 control'sthe',exhaust; ports 38, and this valve is adjustable by meansof astem 42 to control thepa'ssage of air) through such ports. `Ali-oody 43 is detachab-ly associated with the casing K, and this hood is formed with ports 44 through which air is admitted to or discharged fro-m the ports 37 and 38.

In operation, the valve V normally 0ccupies closed position with respect to the port v19 under the action of the spring 29 loo so that the passage of water from the duct 20 to the bowl is prevented. When supplying water to the bowl, the handle 33 is gripped and pushed downwardly to the lower end of the slot 32 thereby imparting a corresponding movement to the piston 25 and all against the action of the spring 29. With the piston 25 in depressed position the valve 5 is moved downwardly from the port 19 thereby opening the latter and allowing the passage of water from the pipe P through the port 19 and duct 2O to the pipe 22. During a downward movement of the piston 25, a suction is created in the casing K above the piston thereby causing an influx of air through the ports 44 and 37 and finally into the casing thro-ugh the opening 35. It will thus be seen that with the piston 25 in its lowermost position that part of the casing above the piston is filled with a column of air. Naturally when downward pressure upon the handle is removed the spring 29 will expand to force the piston 25 upwardly but against the action of the column of air within the casing asv the latter is trapped within the casing by virtue of the check valve 89. rllhe escape of air from the casing takes place through the ports 38 and by proper adjustment of the valve 41, it will be clear that the discharge of air from the casing can be so restricted as to retard the upward movement of the piston 25 sufiiciently to postpone the closing of the valve V.

In practice, the adjustment of the valve 41 is such that the valve V is maintained in open position for an interval/sufiiciently long to permit of the proper amount of water being supplied to the bowl.

Wlhat I claim is:

1. A Hush valve mechanism comprising a cast-ing, a casing supported on the casting, a port formed in the casting, a valve controlling said port, a stem `formed on the valve and slidable through the casting, a piston within the casing and connected to said stem, a sleeve fixed to the piston and having spacing ribs formed on the periphery thereof, a spring for normally urging the piston to a position in which said valve is closed, a handle extending through a slot in the casing and rigidly connected to the sleeve for moving the piston against the action of said spring to open said valve, and means for controlling the flow of air to and from the casing.

2. A flush valve mechanism comprising a casting having a port 'formed therein, a

cylinder sustained on the casting, a piston movable within the cylinder, a sleeve fixed to the piston and having spacing ribs formed on the periphery thereof, a stem for said valve slidable in the casting and connected to said piston, a spring within the sleeve and interposed between said piston and saidcasting for urging the piston to one end of the cylinder, a handle connected to said sleeve `for manually moving the sleeve and piston against the action of said spring to open said valve, and valves for controlling the influx and eiilux of'air into and out of the cylinder in a manner to retard the movement of the piston in the direction in which it is urged.

3. A flush valve mechanism comprising a casting having a port formed therein, a cylinder sustained on the casting, a piston movable within the cylinder, a sleeve fixed to the piston, a stem yfor said valve slidable in the casting and connected to said piston, a spring within the sleeve and interposed between said piston and said casting for urging the piston to one end of' the cylinder, a handle connected to said sleeve for manually moving the sleeve and piston against the action of said spring to open said valve, a plate closing one end of the cylinder having an opening formed therein, a valve cap formed in the plate and having intake and discharge ports formedl therein, a check valve controlling the intake port, and a valve controlling the discharge port for the purpose described.

4. A flush valve mechanism comprising a casting having a port formed therein, a cylinder sustained on the casting, a piston inevable within the cylinder, a sleeve fixed to the piston and having spacing ribs formed on the periphery thereof, a stem for said valve slidable in the casting and connected to said piston, a spring within the sleeve and interposed between said piston and said casting for urging the piston to one end of the cylinder, a handle connected to said sleeve for manually moving the sleeve and piston against the action ot said spring to open said valve, a plate closing one end of the cylinder having an opening formed therein, a valve cap formed in theplate and having intake and discharge ports formed therein, a check valve controlling the intake port, and a manually adjustable valve controlling kthe discharge port.

In testimony whereof I have signed my name to this specification.

NICOLAS GYMNAITIS, p

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